import RT-Thread@9217865c without bsp, libcpu and components/net

components/libc/compilers/dlib/syscall_write.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-01-28     Bernard      first version
+ */
+
+#include <rtthread.h>
+#include <LowLevelIOInterface.h>
+#include <unistd.h>
+#include <compiler_private.h>
+#define DBG_TAG    "dlib.syscall.write"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
+/*
+ * The "__write" function should output "size" number of bytes from
+ * "buffer" in some application-specific way.  It should return the
+ * number of characters written, or _LLIO_ERROR on failure.
+ *
+ * If "buffer" is zero then __write should perform flushing of
+ * internal buffers, if any.  In this case "handle" can be -1 to
+ * indicate that all handles should be flushed.
+ *
+ * The template implementation below assumes that the application
+ * provides the function "MyLowLevelPutchar".  It should return the
+ * character written, or -1 on failure.
+ */
+
+#pragma module_name = "?__write"
+
+size_t __write(int handle, const unsigned char *buf, size_t len)
+{
+#ifdef DFS_USING_POSIX
+    int size;
+#endif /* DFS_USING_POSIX */
+
+    if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
+    {
+#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
+        rt_device_t console_device;
+
+        console_device = rt_console_get_device();
+        if (console_device)
+        {
+            rt_device_write(console_device, 0, buf, len);
+        }
+
+        return len; /* return the length of the data written */
+#else
+        return _LLIO_ERROR;
+#endif /* defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE) */
+    }
+    else if (handle == _LLIO_STDIN)
+    {
+        return _LLIO_ERROR;
+    }
+    else
+    {
+#ifdef DFS_USING_POSIX
+        size = write(handle, buf, len);
+        return size; /* return the length of the data written */
+#else
+        LOG_W(_WARNING_WITHOUT_FS);
+        return _LLIO_ERROR;
+#endif /* DFS_USING_POSIX */
+    }
+}